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THOR Wood Siding

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THOR Wood siding is 100 percent natural and ecological, contains no damaging chemicals, and is processed with water-based stains that have low harmful volatile organic compound (voc) emissions.

About Torrefaction

For the torrefaction used when manufacturing THOR Wood siding, the material is gradually heated to approximately 130°C for about 20 hours, which effectively equalizes it and reduces the moisture level to close to zero percent. Next, the wood is heated to about 200°C in order to thermally modify the molecular structure. With this procedure, the amber color is provided and the wood is less prone to moisture level fluctuations.

Heat treatment at an intense level is the key to the durability, stability, and damage resistance of THOR Wood siding. Quality assurance for every phase ensures optimal effect of torrefaction in general. A steady lowering of the temperature, along with the controlled addition of water vapor, is responsible for bringing the moisture level of each piece of wood back up to between 4 percent and 7 percent, restoring flexibility and completing the process.

THOR Products and Colors

Various colors are available for the THOR brushed faced siding, and the line features three clear stains to enhance the wood grain, as well as an unlimited selection of solids from TrueMatch. Rabbeted Bevel and Moldings are sized according to the following specifications:

  • Rabbeted Bevel: 1" x 6"
  • Inside Corner: 2" x 2"
  • Inside or Outside Corner: 2" x 4", 2" x 5", 2" x 6"

Care and Maintenance of THOR Wood Siding

Consumers could notice a slight fading of THOR Wood siding within the first few weeks of installation because of the exposure to UV light, but the color should remain consistent in the future.


THOR Torrefied Wood Siding by maibec has a 60-year warranty against wood decay, a 15-year warranty on two coats of solid stain (extendable up to 30 years), a 5-year warranty on labor, and a 3-year warranty on two coats of semi-transparent stain with purchase. More information about the Warranties can be found on the official maibec webpage for THOR.